CN105270197A - Vehicle system with battery boost and bypass control - Google Patents
Vehicle system with battery boost and bypass control Download PDFInfo
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- CN105270197A CN105270197A CN201510313448.3A CN201510313448A CN105270197A CN 105270197 A CN105270197 A CN 105270197A CN 201510313448 A CN201510313448 A CN 201510313448A CN 105270197 A CN105270197 A CN 105270197A
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- bus
- battery
- vehicular system
- converter
- voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A vehicle system according to an exemplary aspect of the present disclosure includes, among other things, a DC/DC converter bus adapted to operate at a first voltage set-point and a low voltage battery bus adapted to operate at a second voltage set-point different from the first voltage set-point.
Description
Technical field
The present invention relates to a kind of Vehicular system, charge for battery during this system is included in particular condition and provide path for battery thus the boost converter of the module load of support DC/DC (DC-DC) converter bus.
Background technology
Usually, because electrified vehicle is driven by one or more with utilizing battery powered selection of Motor, therefore electrified vehicle is different from conventional motor vehicle.By contrast, conventional motor vehicle only relies on internal combustion engine drives vehicle.Electrified vehicle can utilize motor to replace explosive motor or except explosive motor or use motor.Motor is typically powered by high-tension battery.
In some instances, the Power Supply Assembly of electrified vehicle is not arranged in the position identical at the homologue of conventional truck with them.Such as, due to packaging constraint, A-battery can be packaged as the distance relatively far away apart from the DC/DC conv for battery charging.This remote packaging can make as A-battery charging is complicated.
Summary of the invention
According to a kind of Vehicular system of exemplifying aspect, among other things, comprise and being suitable in the DC/DC converter bus of the first voltage sets point operation and the A-battery bus that is suitable at the second voltage sets point operation being different from the first voltage set point.
In the further non-limiting example of above-mentioned Vehicular system, boost converter to be arranged between DC/DC converter bus and A-battery bus and the electric current be configured between control DC/DC converter bus and A-battery bus.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, boost converter comprises at least one switch operationally making DC/DC converter bus be separated with A-battery bus.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, boost converter comprises by-pass switch, energy accumulating device, boosted switch and diode.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, DC/DC converter bus comprises DC/DC conv and at least one module load.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, A-battery bus comprises battery.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, the first voltage set point comprises fixed voltage and the second voltage set point comprises variable voltage.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, control unit communicates with DC/DC converter bus and A-battery bus power.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, control unit is configured in charge mode and support mode operation, in charge mode, DC/DC converter bus is the battery charging of A-battery bus, supports the module load of DC/DC converter bus in support mode mesolow battery bus.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, Vehicular system is a part for electrified vehicle low voltage bus.
According to a kind of Vehicular system of another illustrative aspects of the present invention, among other things, comprise battery, be configured to the DC/DC conv of battery charging, be configured to raise the boost converter from DC/DC transducer voltage and control unit, control unit is configured in charge mode and support mode operation, in charge mode, electric current flows along first direction thus is the charging of described battery, and in support mode, electric current flows thus support module load along contrary second direction.
In the further non-limiting example of above-mentioned Vehicular system, a part for battery to be the A-battery of a part for A-battery bus and DC/DC conv be DC/DC converter bus.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, module load is a part for DC/DC converter bus.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, boost converter comprises optionally closed thus under support mode, limits the by-pass switch in the path of electric current.
In the further non-limiting example of above-mentioned arbitrary Vehicular system, optionally disconnect during boost converter is included in charge mode and boosted switch that is closed thus stored energy in energy storage devices.
According to a kind of method of another illustrative aspects of the present invention, among other things, be included in the Vehicular system of electrified vehicle and combine boost converter, respond the first situation and at DC/DC conv be operating vehicle systems and response the second situation and support operating vehicle systems in the support mode of at least one module load at battery in the charge mode of battery charging.
In the further non-limiting example of said method, DC/DC conv is a part for DC/DC converter bus, and battery is a part for A-battery bus.
In the further non-limiting example of above-mentioned either method, the method is included in fixing voltage sets point operation DC/DC converter bus and in variable voltage sets point operation A-battery bus.
In the further non-limiting example of above-mentioned either method, the method comprises response the 3rd situation and DC/DC conv is separated with battery.
In the further non-limiting example of above-mentioned either method, the first situation comprises the low state-of-charge situation of battery and the second situation comprises DC/DC conv overload condition.
The embodiment of above-mentioned paragraph, example and possibility and claim or following specification sheets and accompanying drawing, comprise their each side or any separately separately in feature can individually or arbitrary utilized in combination use.The feature described about an embodiment is applicable to all embodiments, unless such feature is incompatible.
Various feature of the present invention and favourable part are apparent to those skilled in the art from following detailed description of the invention.Accompanying drawing with detailed description of the invention can be briefly described as follows.
Accompanying drawing explanation
Fig. 1 schematically shows the power drive system of electrified vehicle;
Fig. 2 shows the Vehicular system of electrified car;
Fig. 3 shows the boost converter of Vehicular system.
Detailed description of the invention
The present invention relates to a kind of Vehicular system, it can be the charge mode operation of battery charging at DC/DC conv, or supports that at battery the support mode of at least one module load of DC/DC converter bus operates.The battery of Vehicular system can utilize variable voltage to charge by local boost converter, and the remainder of Vehicular system can at fixing voltage sets point operation simultaneously.At DC/DC conv overburden and/or when being separated completely with DC/DC converter bus by battery, boost converter also can flow along contrary direction by allowable current.These and other feature can be described in the present invention in further detail.
Fig. 1 schematically illustrates the power drive system 10 of electrified vehicle 12.Although illustrate with hybrid electric vehicle (HEV), but be understood that, concept described herein is not limited to HEV, and other electrified vehicles can be expanded to, include, but are not limited to plug-in hybrid electric vehicle (PHEV), pure electric vehicle (BEV) and fuel-cell vehicle.
In one embodiment, power drive system 10 is the power distribution systems (powersplitsystem) that have employed the first driving system and the second driving system, first driving system comprises the combination of driving engine 14 and electrical generator 16 (i.e. the first motor), and the second driving system at least comprises motor 36 (i.e. the second motor), electrical generator 16 and battery 50.Such as, motor 36, electrical generator 16 and battery 50 can form the power transmission system 25 of power drive system 10.First and second driving systems produce moment of torsion thus drive one or more groups driving wheel of vehicle 30 of electrified vehicle 12.
The driving engine 14 of such as explosive motor and electrical generator 16 can be connected by power transmission unit 18.In one non-limiting embodiment, power transmission unit 18 is compound planet gears.Certainly, the power transmission unit of other type comprising other gear cluster and change-speed box also can be utilized to come connecting engine 14 and electrical generator 16.Power transmission unit 18 can comprise Ring gear 20, sun gear 22 and bracket assembly 24.Electrical generator 16 is as can drive by power transmission unit 18 during electrical generator thus be electric energy by kinetic transformation.Alternatively, electrical generator 16 can be kinetic energy as motor thus by electric energy conversion, thus to axle 26 output torque of bracket assembly 24 being connected to power transmission unit 18.Because electrical generator 16 is operably connected to driving engine 14, therefore the speed of driving engine 14 can be controlled by electrical generator 16.
The Ring gear 20 of power transmission unit 18 can be connected with axle 28, and axle 28 is connected with driving wheel of vehicle 30 by the second power transmission unit 32.Second power transmission unit 32 can comprise the gear cluster with multiple gear 34A, 34B, 34C, 34D, 34E and 34F.Other power transmission units are also suitable for.Moment of torsion is delivered to diff 38 from driving engine 14 thus provides tractive force for driving wheel of vehicle 30 by gear 34A-34F.Diff 38 can comprise can to multiple gears of driving wheel of vehicle 30 transmitting torque.Second power transmission unit 32 is mechanically coupled by diff 38 and wheel shaft 40 thus to driving wheel of vehicle 30 distribute torque.
Also motor 36 can be adopted by driving driving wheel of vehicle 30 to axle 46 output torque, and axle 46 is also connected with the second power transmission unit 32.In one embodiment, motor 36 and electrical generator 16 are parts of regeneration brake system, and within the system, motor 36 and electrical generator 16 can as motor output torques.Motor 36, electrical generator 16, power transmission unit 18 and power transmission unit 32 are generally called drive axle 42 or the change-speed box of electrified vehicle 12.Therefore, when chaufeur selects specific shift position, by providing tractive force suitably to control drive axle 42 to driving wheel of vehicle 30 thus providing the gear of the correspondence making electrified vehicle 12 advance.
Each of motor 36 and electrical generator 16 can to high-voltage bus 48 and subsequently to battery 50 output power.In other words, motor 36 and electrical generator 16 are couple to battery 50 by high-voltage bus 48.Battery 50 can be can output power operation motor 36 and the high-tension battery of electrical generator 16.Electrified vehicle 12 also can adopt energy storing device and/or the output unit of other types.
Various accessory module load 54 can be powered by the energy transferring on low voltage bus 56 and distribution.The non-limiting example of module load comprises radio receiver, CD Player, gps system, light equipment, electric window, automatic seat, cooling fan, rain brush, heating seat, heatable vehicle window and/or instrument group.The energy needed for module load 54 power supply station can be provided by A-battery 58, battery 50 (by high-voltage bus 48), motor 36 and/or electrical generator 16.
There is provided the power supply changeover device of such as DC/DC conv 59 thus the electrical energy transfer controlled between high-voltage bus 48 and low voltage bus 56.From the energy of high-voltage bus 48 or produce in process of regenerative braking and the energy that is delivered to high-voltage bus 48 be delivered to low voltage bus 56 by DC/DC conv 59 by this way.
Additionally, power drive system 10 can comprise the control system 44 of each side for monitoring and/or control electrified vehicle 12.Such as electrified vehicle 12 can be monitored and/or be controlled to control system 44 with power transmission system 25, power transmission unit 18 and 32, DC/DC conv 59 or other component communications.Control unit 44 comprises electronics package and/or the software of the controlling functions of the necessity performed for operating electrified vehicle 12.In one embodiment, control system 44 is combinations (VSC/PCM) of vehicle system controller and power train control module.Although illustrate with independent hardware unit, control system 44 can comprise with multiple controllers of the form of multiple hardwares device or the various software controller in one or more hardware unit.
Control area net（CAN） network (CAN) 52 admissible control system 44 communicates with drive axle 42.Such as, control system 44 can show whether to there occurs the transformation between shift position from drive axle 42 Received signal strength.Control system 44 also can communicate with the Battery control module of battery 50 or other control systems.
In one non-limiting embodiment, electrified vehicle 12 has two kinds of basic manipulation modes.Electrified vehicle 12 is when utilizing motor 36 (general assisting not from driving engine 14) for vehicle propulsion, can operate in elec. vehicle (EV) pattern, thus under specific driving model/circulation consuming cells 50 state-of-charge until reach its maximum permission rate of discharge.EV pattern is the example of the charge consumption pattern of electrified vehicle 12 operation.In EV pattern, the state-of-charge of battery 50 can raise in some cases, such as, due to the regenerative brake stage.Under the EV pattern of acquiescence, do not allow operation driving engine 14 generally, but driving engine 14 can be operated when needed based on the permission of Vehicular system state or operator.
Electrified vehicle 12 can additionally with the operation of hybrid power (HEV) pattern, and driving engine 14 and motor 36 are all for vehicle propulsion in this mode.HEV mode is the example of the electric charge maintenance pattern for the operation of electrified vehicle 12.During HEV mode, electrified vehicle 12 can reduce motor 36 and advance use, to advance use that the state-of-charge of battery 50 is remained on constant or approximately constant level by increasing driving engine 14.Although do not illustrate herein, can at other operation mode electrification vehicles 12 except EV and HEV mode.
Fig. 2 diagrammatically illustrates Vehicular system 60, and Vehicular system 60 can be combined in electrified vehicle, such as, in the electrified vehicle 12 of Fig. 1.In one embodiment, Vehicular system 60 is parts (such as low voltage bus 56) as shown in Figure 1 of the low voltage bus of electrified vehicle.
In one embodiment, Vehicular system 60 comprises DC/DC converter bus 62 and A-battery bus 64.Boost converter 66 is arranged between DC/DC converter bus 62 and A-battery bus 64.As will be described as further below, the combination of boost converter 66 allows that DC/DC converter bus 62 is being different from the second voltage sets point operation of the first voltage set point at the first voltage sets point operation and A-battery bus 64.
DC/DC converter bus 62 can comprise DC/DC conv 70 and one or more module load 72.DC/DC conv 70 can receive the input DC voltage 99 with corresponding input DC electric current from the power supply 65 of the battery such as operated at the high-voltage bus of electrified vehicle.In one embodiment, input DC voltage 99 is converted to the comparatively low pressure output dc voltage 101 having and be suitably for the corresponding input DC electric current that module load 72 is powered by DC/DC conv 70.In other words, the DC/DC converter bus 62 of a part for low voltage bus is couple to high-voltage bus by DC/DC conv 70 electrically.In one embodiment, DC/DC conv 70 is suitable for input DC voltage 99 " step-down " to lower output dc voltage 101.
Output dc voltage 101 is communicated with module load 72 by the connection of such as electric wire 75.Various types of module load 72 can be powered by the output dc voltage 101 be communicated with DC/DC conv 70.Module load 72 can comprise one or more following annexes: light equipment, automatic window, automatic seat, cooling fan, rain brush, heating seat, heatable vehicle window, instrument group, radio receiver etc.Certainly, these loads provided are only as non-limiting example.
In another non-limiting example, DC/DC converter bus 62 is being about the fixed voltage set point operation of 12V (volt).In other words, the output dc voltage 101 from DC/DC conv 70 is the suitable fixed voltage of module load 72 power supply effectively.
A-battery bus 64 can comprise battery 74.In one embodiment, battery 74 is A-batteries, the battery of such as 12V.Battery 74 can be used for start the engine or for other object various.Sensor 76 can be connected to the binding post of battery 74 thus the various situations of monitoring battery 74 electrically, includes but not limited to its electric current, voltage, temperature and/or state-of-charge (SOC).
Boost converter 66 can be arranged between DC/DC conv 70 and battery 74.Connection or electric wire 77 can extend between DC/DC conv 70 and boost converter 66.By connect or electric wire 79 to be communicated with voltage be before battery 74 charges, boost converter 66 operationally boosts or " setting " is received from the voltage of DC/DC conv 70.The voltage received from DC/DC conv 70 by boost converter 66 can equal output dc voltage 101.
By being combined in Vehicular system 60 by boost converter 66, A-battery bus 64 can operate at second voltage set point (namely different from the voltage set point for powering for module load 72 voltage set points) of the first voltage set point being different from DC/DC converter bus 62.In one non-limiting embodiment, the voltage set point of A-battery bus 64 comprises variable voltage.Such as, voltage set point can 13V and 15V or be suitably for battery 74 charge some other voltage ranges between change.
Vehicular system 60 can additionally comprise control unit 68.Although illustrate with independently assembly, control unit 68 can be the part that whole Vehicular system controls (such as seeing the control system 44 in Fig. 1).Control unit 68 can comprise for perform control Vehicular system 60 multiple related algorithms needed for hardware and/or software.
Such as, in one non-limiting embodiment, control unit 68 setting program is used for requiring that Vehicular system 60 is in charge mode or support mode operation.At charge mode, respond the first situation and DC/DC conv 70 is charged for battery 74.First situation can be the low SOC situation of the battery 74 sensed by sensor 76.Sensor 76 can represent the signal of low SOC situation to control unit 68 communication thus require charge mode.The voltage being received from DC/DC conv 70 raised by boost converter 66 before being communicated with charging valtage to battery 74.Arrow in fig. 2 by indicating " CM " schematically shows the path of charge mode.
In support mode, respond the second situation and actuating battery 74 provides electric current along contrary direction thus one or more module loads 72 of support DC/DC converter bus 62.In one embodiment, the second situation is the extra-heavy situation of DC/DC conv 70.DC/DC conv 70 can be monitored by control unit 68 thus determine whether to there occurs extra-heavy situation.Boost converter 66 provides path thus support module load 72 for battery 74.The path of support mode is schematically shown by the arrow indicating " SM " in Fig. 2.In one embodiment, the path of charge mode and support mode all extends through boost converter 66.
Fig. 3 shows the other details of the boost converter 66 in Fig. 2.In one embodiment, boost converter 66 comprises the first switch 78 (i.e. by-pass switch), energy storing device 80, second switch 82 (i.e. boosted switch) and is connected in series the diode 84 of setting with energy storing device 80.First switch 78, second switch 82 and diode 84 can configure as semiconductor switch.In one embodiment, energy storing device 80 is implemented with inducer.But, additionally or alternatively can adopt other devices of such as cond.
In one embodiment, such as, during above-mentioned support mode, the first switch 78 can close thus carry out support module load by providing from A-battery bus 64 to the electric current of DC/DC converter bus 62.Controller unit 68 can require that the first switch 78 responds the such as extra-heavy situation of DC/DC conv and closes.In figure 3, the open position of the first switch 78 illustrates with solid line and make position is shown in broken lines.During support mode, diode 84 stops electric current to be passed to energy storing device 80 (from the right side of Fig. 3 to left side) from A-battery bus 64.During support mode, second switch 82 is typically positioned at open position (illustrating with solid line).
In another embodiment, during charge mode as escribed above, the first switch 78 disconnect and second switch 82 optionally disconnect and close thus in energy storing device 80 stored energy.In other words, second switch 82 optionally can start thus raise the voltage being received from DC/DC converter bus 62.When second switch 82 closes (as shown in phantom in Figure 3), electric current can flow through energy storing device 80 and energy can be stored in energy storing device 80 by producing magnetic field.Otherwise when second switch disconnects (shown in solid line), electric current reduces and the magnetic field produced before will disappear thus keep electric current to flow to A-battery bus 64, for the assembly of the A-battery bus 64 of such as A-battery charges.
Still, in another embodiment, such as, during another situation of Vehicular system 60, boost converter 66 can be used for DC/DC converter bus 62 being separated completely, so that conserve energy with A-battery bus 64.Such as, in clastotype, control unit 68 can require the first switch 78 to disconnect and second switch 82 closes, thus DC/DC converter bus 62 is separated with A-battery bus 64.When second switch 82 closes, for being provided to the path of ground connection 86 instead of the path to A-battery bus 64 from the electric current of energy storing device 80.In one non-limiting embodiment, during the situation of ignition lock shutoff, clastotype is performed.
Although different non-limiting examples is depicted as have specific assembly or step, embodiments of the invention are not limited to those and specifically combine.Also possible that, the combination with any feature in other non-limiting examples or assembly in some assemblies any in non-limiting example or feature is utilized.
It should be understood that identical Reference numeral represents corresponding or similar element in whole a few width accompanying drawings.Although it should be understood that and disclose in these exemplary embodiments and describe particular arrangement of components, from instruction of the present invention, also advantageously can obtain other arrange.
Above-mentioned explanation should be interpreted as the illustrative and meaning that is not any restriction.Those having ordinary skill in the art will appreciate that and can expect that some change within the scope of the invention.For those reasons, following claim should be studied to determine true scope of the present invention and content.
Claims (10)
1. a Vehicular system, comprising:
Be suitable for the DC/DC converter bus at the first voltage sets point operation; And
Be suitable for the A-battery bus at the second voltage sets point operation being different from described first voltage set point.
2. Vehicular system according to claim 1, comprises boost converter, and it to be arranged between described DC/DC converter bus and described A-battery bus and to be configured to control the electric current between described DC/DC converter bus and described A-battery bus.
3. Vehicular system according to claim 2, wherein said boost converter comprises at least one switch operationally making described DC/DC converter bus be separated with described A-battery bus.
4. Vehicular system according to claim 2, wherein said boost converter comprises by-pass switch, energy storing device, boosted switch and diode.
5. Vehicular system according to claim 1, wherein said DC/DC converter bus comprises DC/DC conv and at least one module load.
6. Vehicular system according to claim 1, wherein said A-battery bus comprises battery.
7. Vehicular system according to claim 1, wherein said first voltage set point comprises fixed voltage and described second voltage set point comprises variable voltage.
8. Vehicular system according to claim 1, comprising the control unit communicated with described DC/DC converter bus and described A-battery bus power.
9. Vehicular system according to claim 8, wherein said control unit is configured in a charge mode and support mode operation, described in charge mode, DC/DC converter bus is the battery charging of described A-battery bus, and described in support mode, A-battery bus supports the module load of described DC/DC converter bus.
10. Vehicular system according to claim 1, wherein said Vehicular system is a part for electrified vehicle low voltage bus.
Applications Claiming Priority (2)
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|---|---|---|---|
| US14/300,678 | 2014-06-10 | ||
| US14/300,678 US9682671B2 (en) | 2014-06-10 | 2014-06-10 | Vehicle system with battery boost and bypass control |
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| Publication Number | Publication Date |
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| CN105270197A true CN105270197A (en) | 2016-01-27 |
| CN105270197B CN105270197B (en) | 2019-09-10 |
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| CN201510313448.3A Active CN105270197B (en) | 2014-06-10 | 2015-06-09 | Vehicular system with battery booster and Bypass Control |
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| US (1) | US9682671B2 (en) |
| CN (1) | CN105270197B (en) |
| DE (1) | DE102015108116B4 (en) |
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Also Published As
| Publication number | Publication date |
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| DE102015108116B4 (en) | 2023-12-28 |
| US9682671B2 (en) | 2017-06-20 |
| DE102015108116A1 (en) | 2015-12-10 |
| US20150353035A1 (en) | 2015-12-10 |
| CN105270197B (en) | 2019-09-10 |
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